These vast expanses of liquid, however, are not water but hydrocarbons such as methane and ethane, forming seas, lakes, and ...

Titan is so frigid — about –290 degrees Fahrenheit [–179 degrees Celsius] — that the liquid present there is made up of hydrocarbons like methane and ethane.) But even such a large moon ...

Titan's surface features liquid hydrocarbon lakes, dunes of organic material, and an icy crust. Beneath this crust, scientists believe a subsurface ocean of liquid water exists. These conditions ...